Posted by **Michele** on Thursday, April 8, 2010 at 6:47pm.

A survey of 300 parks showed the following

15 had only camping

20 had only hiking trails

35 had only picnicking

185 had camping

140 had camping and hiking trails

125 had camping and picnicking

210 had hiking trails

Find the number of parks that:

Did not have any of these features?

Had exactly two of these features??

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